Bought my first mopar 73’ Duster and the bottom of the air filter pan is black (right above the carb). Any tips on how the 4bbl should be adjusted

So I bought a 73’ Gold Duster. I believe it’s a 318 4bbl (still trying to confirm it’s not a 340 because it was cloned to look like it). I noticed that the air cleaner was scalding hot after it had been sitting for about 15 minutes and took some pictures. From a Reddit forum it looks like I should check the timing and tune the carb. Both things I’ve never done before.

I’m pretty mechanically inclined and work a lot on cars from the 90’s up. They pointed me to this forum and I was just looking for some tips. Also where would the engine block number be located on a 318 or 340? I am going to buy a heat gun today just to make sure I’m not exaggerating the engine temps.

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